2. Rogue WavesThe waves are possibly the most terrifying occurrences on the ocean. There can be no prior warning of them, no mathematical computation involving where and when they might occur.
They are simply several dozen waves of average height for the conditions that suddenly merge into one and climb and climb. Their maximum limits are not known. An 85 footer is quite small.
A 157 footer struck Fastnet Lighthouse, Ireland, in 1985. Such gigantic, nearly vertical walls of water are easily capable of flipping super tankers and sinking them in seconds.
Rogue waves are not caused by any one factor, but high winds and strong currents routinely cause waves to merge. They are somewhat more prevalent in the Triangle than in calm areas of the world's oceans, because of hurricanes and the Gulf Stream itself.